Lieberman, Josefa Nina,  1921- <br/><br/>
Playfulness :  its relationship to imagination and creativity / 
J. Nina Lieberman 
 - New York :  Academic Press,  1977 
 - xiv, 179 p. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 163-175. 
<br/><br/><label>ISBN: </label>0124494501 
<br/><br/><label>LCCN: </label>76-042975 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Play--Psychological aspects<br/>Imagination<br/>Creative ability